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试验了上小下大的钢锭模内挂发热衬板浇注的镇静钢钢锭的低倍组织和中心带的偏析;试验锭与对比锭(上大下小带帽钢锭)轧成的角钢在相当于钢锭中心带几个不同高度上的夹杂物的类别和数量;轧成的角钢的低倍组织和机械性能。指出此种方法应用于生产的J3的可能性及进一步改进的方向。
Test of small and large ingot mold hanging hot liner pouring of the microstructure and center segregation of the killed cast steel; test ingot and comparative ingot (upper and lower small cap steel ingot) into the angle equivalent to The number and type of inclusions at several different heights in the center of the ingot; The microstructure and mechanical properties of the rolled angle steel. Point out the possibility that this kind of method is applied to production J3 and the direction of further improvement.